Turkey responded to a terrorist attack from Syria's northern city of Tal Rifat on Turkish soldiers in Afrin, National Defense Ministry said on Friday.
The PKK/YPG terrorist group carried out the attack, the ministry said on Twitter.
In its more than 30-year terror campaign against Turkey, the PKK -- listed as a terrorist organization by Turkey, the U.S. and the EU -- has been responsible for the deaths of some 40,000 people, including women and children. The PYD/YPG is its Syrian branch.